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Penstemon whippleanus |
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| Common name |
Whipple's penstemon |
| Family |
plantaginaceae |
| Life cycle |
perennial |
| Flowers |
dark purple (summer) |
| Size |
2' |
| Light |
sun |
From seed  |
One of the easiest penstemons to grow from seed, requiring no cold treatment or light.
detailed seed-starting info below
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Lovely strongly upright penstemon - a single flower stalk rises from a neat rosette of foliage, with tubular flowers spaced along it. It is supposed to be long-lived - unfortunately, ours all perished after their second season. Maybe the wet conditions throughout the season last year did them in. Subsequent attempts to re-establish this species from seed have met with limited success.
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We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston. Read about all the penstemon species in our garden Seed for this plant is included on my seed trade list About my plant portraits
PlantLinks to other web pages about Penstemon whippleanus
- Seed from '01 trade. Baggy 70F (50%G, 3-12d)
- Same seed as above. Baggy 70F (14%G, 6-26d)
- Seed from '06 trade. Baggy 70F (12d) - 70F with light (13d; no G)
- Seed from '07 trade. Baggy 70F (60+%G, 7-10d)
- Seed from '10 trade. Baggy 70F (45%G, 5-8d)
- Same seed as above, cold-stored. Baggy 70F (70%G, 5-20d)
- Same seed as above. cold-stored. Baggy 70F (76%G, 5-16d)
Easy from seed, but appears to lose viability quickly in some circumstances (cold storage is probably helpful). I've found that it's best to wait with potting up until leaves develop in the baggy environment.
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